CN213921188U

CN213921188U - Folding baby stroller

Info

Publication number: CN213921188U
Application number: CN202022673755.1U
Authority: CN
Inventors: 许素英
Original assignee: Individual
Current assignee: Liu Shenghui
Priority date: 2020-11-18
Filing date: 2020-11-18
Publication date: 2021-08-10
Anticipated expiration: 2030-11-18

Abstract

The utility model provides a folding children's shallow, including seat, front wheel support and rear wheel support, still include end to end and establish ties articulated preceding connecting rod, well connecting rod and back connecting rod in proper order, the head end of preceding connecting rod is articulated with the free portion of seat, and the tail end of back connecting rod is articulated with the free portion of rear wheel support, and the pole body of well connecting rod is articulated on the free portion of front wheel support. The trolley avoids the situation that the front wheel support is deformed to cause unsmooth sliding and even deadlocking in the prior art in a folding mode through the sliding block, enhances the working reliability of the trolley, and prolongs the service life of the trolley.

Description

Folding baby stroller

Technical Field

The utility model relates to a children's shallow technical field especially relates to a folding children's shallow.

Background

With the improvement of living standard of people, the use of the child stroller is more and more, and the folding child stroller is developed in order to reduce the volume of the child stroller in storage and transportation. CN211167031U discloses a foldable stroller, which adopts a structure that a connecting rod is arranged on a seat and a rear wheel bracket, and the connecting rod and the sliding block are connected on a front wheel bracket in a co-rotating way, so that the foldable stroller is integrally formed into a foldable structure similar to a foldable umbrella. The front wheel bracket of the child stroller with the structure is an inclined stressed part, so that the child stroller is easy to bend and deform in long-term use, and the sliding block running on the child stroller can not slide smoothly or even be completely blocked on the bent front wheel bracket; in addition, unless a special locking device is arranged, the folding structure is easy to have the tendency of declining of the seat plate under the action of the gravity of passengers exerted on the seat plate, and particularly after the front wheels are stumbled by objects to empty the rear wheels, the self-folding tendency generated by the gravity of children is particularly obvious, and the safety is poor; or to provide a strong and complicated locking device, which is economically disadvantageous.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a prevent to expand or fold when dead folding children's shallow that became invalid because of the slider card is provided.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: the utility model provides a folding children's shallow, includes seat, front wheel support and rear wheel support, and both of seat, front wheel support and rear wheel support three connect with rotating and the third person connects with rotating on one of the aforesaid two, perhaps foretell three connects together around same rotation center line with rotating, and seat, front wheel support and rear wheel support three all form articulated portion and free portion, its characterized in that separately: the seat is characterized by further comprising a front connecting rod, a middle connecting rod and a rear connecting rod which are sequentially connected in series and hinged with each other in a head-tail mode, the head end of the front connecting rod is hinged with the free portion of the seat plate, the tail end of the rear connecting rod is hinged with the free portion of the rear wheel support, and the rod body of the middle connecting rod is hinged to the free portion of the front wheel support.

Further: the middle connecting rod is L-shaped, and when the foldable stroller is in a folded state, one side of the L-shaped middle connecting rod coincides with the front connecting rod when viewed from the main viewing direction.

Further: the number of the middle connecting rods is 2, and the front wheel bracket is clamped in the middle of the 2 middle connecting rods.

Further: the head end of the front connecting rod is hinged with the free part of the seat through the seat front shaft, the middle connecting rod body is hinged with the free part of the front wheel support through the front support shaft, the tail end of the front connecting rod is hinged with the head end of the middle connecting rod through a front pin shaft, when the foldable stroller is in an unfolded state, the front pin shaft is located in front of a connecting line of the axes of the seat front shaft and the front support shaft when viewed from the main direction, and the tail end of the middle connecting rod is provided with a limiting device for preventing the tail end of the middle connecting rod from rising.

Further: the limiting device comprises a limiting block and a main shaft sleeve, the main shaft sleeve is arranged at the hinged position of the front wheel support and the rear wheel support, the limiting block is arranged on the rod body of the rear connecting rod, and the limiting block is abutted to the main shaft sleeve when the foldable stroller is in an unfolded state.

Further: the tail end of the rear connecting rod is hinged with the free part of the rear wheel support through a rear support shaft, the tail end of the middle connecting rod is hinged with the head end of the rear connecting rod through a rear pin shaft, and when the foldable baby stroller is in an unfolded state, the front support shaft, the rear pin shaft and the rear support shaft are in a straight line when observed from the main view direction.

Further: a lower pulling device is arranged at the rear pin shaft and is a shaft sleeve sleeved outside the rear pin shaft.

Through adopting the technical scheme, the technical effect of the utility model is that a folding children's shallow is provided, the folding mode through the slider probably exists among the prior art has been avoided to this shallow because of the front wheel support warp the not smooth even dead circumstances of card of slip, has strengthened the operational reliability of shallow, and has prolonged the life of shallow, even if the front wheel support warp because of long-term atress, still can guarantee normally to open and draw in.

Drawings

Fig. 1 is a schematic perspective view of the present invention in an expanded state;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a front view of the present invention in a deployed state;

FIG. 4 is an enlarged view of a portion of FIG. 3 at B;

FIG. 5 is a front view of the present invention in a folded configuration;

FIG. 6 is an enlarged view of a portion of FIG. 5 at C;

the folding bicycle comprises a bicycle frame, a bicycle.

Detailed Description

As shown in fig. 1 to 6, there is shown a structure of a preferred embodiment of the present invention.

It should be noted that the front and back directions of the present invention are determined by the general pushing direction of the cart, that is, the seat plate 8 is located forward, the push rod 3 is located backward, for example, in the main viewing direction of fig. 3, the left side is forward, and the right side is backward. In addition, to simplify the drawing, some pins are not shown in the drawing, but rather the respective pins are shown with positions that indicate the respective pin holes.

The stroller of the preferred embodiment comprises a seat plate 8, a front wheel bracket 7, a rear wheel bracket 4 and a push rod 3. As in the prior art, the seat plate 8 is hinged with the backrest 2 and the guard bar 9 and is provided with a corresponding locking device. In the preferred embodiment, a tarpaulin frame 1 is hinged on the top of the backrest 2 so as to mount tarpaulin for shading sun and rain. The front wheel support 7, the rear wheel support 4 and the push rod 3 are hinged together through a main shaft 11, a front wheel 6 is installed at the tail end of the front wheel support 7, a rear wheel 5 is installed at the tail end of the rear wheel support 4, and a handle is installed at the tail end of the push rod 3. The seat plate 8 of the preferred embodiment is hinged to the front wheel support 7 near the main shaft 11 through the seat plate rear shaft 10 for simplifying the assembly process of the related components, but it is obvious that the seat plate 8 can be hinged to the main shaft 11 as well, or three of the seat plate 8, the front wheel support 7 and the rear wheel support 4, wherein the two are rotationally connected and the third is rotationally connected to one of the two, or the three are rotationally connected together around the same rotation center line, which are all the conventional technical means adopted by the above solution.

Due to the aforementioned hinging, the seat plate 8, the front wheel support 7 and the rear wheel support 4 all form a hinged end and a free end, respectively. Accordingly, the portion thereof near the hinge end is a hinge portion, and the portion which can freely move other than the hinge portion is a free portion.

The key improvement of the utility model lies in: the device also comprises a front connecting rod 15, a middle connecting rod 14 and a rear connecting rod 12 which are sequentially hinged in series end to end. The head end of the front connecting rod 15 is hinged with the free part of the seat plate 8, the tail end of the rear connecting rod 12 is hinged with the free part of the rear wheel bracket 4, and the rod body of the middle connecting rod 14 is hinged on the free part of the front wheel bracket 7. It should be noted that the shaft described herein refers to a portion located between the head end and the tail end.

The three are folded by the connecting rod, so that the condition that the front wheel support 7 is deformed to cause unsmooth sliding and even deadlocking in the folding mode of the sliding block in the prior art is avoided, the working reliability of the cart is enhanced, the service life of the cart is prolonged, and the normal opening and folding can be ensured even if the front wheel support 7 is deformed due to long-term stress.

Further, the middle link 14 of the preferred embodiment has an L-shape, and as shown in fig. 5 and 6, when the foldable stroller is in the folded state, one side of the L-shape coincides with the front link 15 as viewed from the front. Such a configuration makes the folding mechanism more compact as a whole.

As shown in fig. 1 and 2, the number of the intermediate links 14 in the present embodiment is 2, and 2 of the intermediate links 14 sandwich the front wheel frame 7. Such a construction is simpler to manufacture and install and avoids the time and labor consuming nature of digging through holes in the front wheel carrier 7 through which the intermediate links 14 pass.

In addition, specifically, the head end of the front link 15 of the present embodiment is hinged to the free portion of the seat 8 through the seat front axle 20, the stem of the middle link 14 is hinged to the free portion of the front wheel bracket 7 through the front bracket axle 13, the tail end of the front link 15 is hinged to the head end of the middle link 14 through the front pin 19, the tail end of the rear link 12 is hinged to the free portion of the rear wheel bracket 4 through the rear bracket axle 21, and the tail end of the middle link 14 is hinged to the head end of the rear link 12 through the rear pin 17.

When the foldable stroller is in the unfolded state, the front pin 19 is located in front of a connecting line between the axes of the seat front shaft 20 and the front frame shaft 13, in other words, a connecting line (an extension line) between the axes of the seat front shaft 20 and the front pin 19 is located in front of the front frame shaft 13, as viewed from the front view direction (as shown in fig. 3 and 4). The folding device of this structure allows the moment generated by the weight of the stroller occupant to raise the rear end of the intermediate link 14 when the intermediate link 14 is in the deployed state. Since the downward rotation of the rear end of the middle link 14 is a necessary action for folding, and once it reaches a predetermined position for unfolding, the upward rotation is an unnecessary action. In the embodiment, the tail end of the middle connecting rod 14 is provided with a limiting device for preventing the tail end of the middle connecting rod 14 from rising. Therefore, the folding device can prevent the folding mechanism from automatically folding under the action of the gravity of a passenger in the prior art, has the function of automatic locking after the passenger is in place, has higher safety, can save other locking mechanisms to a certain extent, and reduces the cost.

The limiting device specifically includes a limiting block 18 and a main shaft sleeve 16, the main shaft sleeve 16 is disposed at a hinge joint of the front wheel support 7 and the rear wheel support 4 (i.e., at the position of the main shaft 11), the limiting block 18 is disposed on the shaft of the rear connecting rod 12, as shown in fig. 3 and 4, when the foldable stroller is in the unfolded state, the limiting block 18 abuts against the main shaft sleeve 16. Compared with other modes such as a buckle and a positioning pin, the structure using the abutting limiting function has the advantages of simple structure and high working reliability, the size is qualified during production, a complex limiting mechanism is not required to be installed, and the cost is reduced.

In addition, in the present embodiment, when the foldable stroller is in the unfolded state, the front support shaft 13, the rear pin 17 and the rear support shaft 21 are aligned when viewed from the front view direction (as shown in fig. 3 and 4). It should be noted that the three are in a straight line, which means that the three are not perfectly in a straight line, and they are almost in a straight line, and even the rear pin 17 of the preferred embodiment is slightly lower than the connecting line of the front support shaft 13 and the rear support shaft 21, which is beneficial to the furling action. The three components are in a straight line when the cart is in the unfolding state, so that a generally locking state can be formed between the front wheel support 7 and the rear wheel support 4, for example, the front wheel is stumbled when the cart is in a travelling state, a furling force is formed between the front wheel support 7 and the rear wheel support 4 at the moment, the two connecting rods are close to the middle connecting rod 14 (the rear half part thereof) and the rear connecting rod 12 which are arranged in a straight line, so that the two connecting rods are difficult to bend, the furling force is hard to resist when passing through the straight connecting rods, the cart is prevented from furling, and the working reliability of the cart can be ensured even if other locking devices are not additionally arranged.

Due to the locking characteristics of the middle connecting rod 14 and the rear connecting rod 12, the device is difficult to fold by pulling the front wheel bracket 7 and the rear wheel bracket 4 when being folded, and the rear pin shaft 17 needs to be pulled downwards to be bent and then is easy to fold, so that the rear pin shaft 17 is provided with the pulling device in the preferred embodiment. The pulling-down device of the preferred embodiment adopts a shaft sleeve sleeved outside the rear pin shaft 17, and can be seen from a thick shaft sleeve sleeved outside the pin shaft 17 in fig. 2, and finger print grooves are arranged on the upper side and the lower side of the thick shaft sleeve for facilitating operation. The shaft sleeve type pulling device utilizes the space above the shaft sleeve type pulling device and increases the contact area to improve the comfort and the simplicity of pulling action, and is simpler and more practical compared with other structures of selecting pull rings, lifting ropes or connecting plates.

Claims

1. The utility model provides a folding children's shallow, includes seat (8), front wheel support (7) and rear wheel support (4), two of seat (8), front wheel support (7) and rear wheel support (4) three are connected with rotating and the third person is connected with rotating on one of the aforesaid two, perhaps foretell three links together around same rotation center line with rotating, seat (8), front wheel support (7) and rear wheel support (4) three all form articulated portion and free portion separately, its characterized in that: the seat is characterized by further comprising a front connecting rod (15), a middle connecting rod (14) and a rear connecting rod (12) which are sequentially hinged in series from head to tail, wherein the head end of the front connecting rod (15) is hinged with the free part of the seat plate (8), the tail end of the rear connecting rod (12) is hinged with the free part of the rear wheel support (4), and the rod body of the middle connecting rod (14) is hinged on the free part of the front wheel support (7).

2. A folding stroller according to claim 1, wherein: the middle connecting rod (14) is L-shaped, and when the folding stroller is in a folding state, one side of the L-shaped is superposed with the front connecting rod (15) when viewed from the main view direction.

3. A folding stroller according to claim 1, wherein: the number of the middle connecting rods (14) is 2, and the front wheel bracket (7) is clamped in the middle of the 2 middle connecting rods (14).

4. A folding stroller according to claim 1, wherein: the head end of a front connecting rod (15) is hinged with the free part of a seat (8) through a seat front shaft (20), the rod body of a middle connecting rod (14) is hinged with the free part of a front wheel support (7) through a front support shaft (13), the tail end of the front connecting rod (15) is hinged with the head end of the middle connecting rod (14) through a front pin shaft (19), when the foldable baby stroller is in an unfolded state, the front pin shaft (19) is located in front of the axis connecting line of the seat front shaft (20) and the front support shaft (13) when viewed from the main view direction, and the tail end of the middle connecting rod (14) is provided with a limiting device for preventing the tail end of the middle connecting rod (14) from rising.

5. A folding stroller according to claim 4, wherein: stop device includes stopper (18) and spindle cover (16), spindle cover (16) set up in the articulated department of front wheel support (7) and rear wheel support (4), and stopper (18) set up on the pole body of rear connecting rod (12) when folding children's shallow is in the state of expanding, stopper (18) and spindle cover (16) butt.

6. A folding stroller according to claim 4, wherein: the tail end of the rear connecting rod (12) is hinged with the free part of the rear wheel support (4) through a rear support shaft (21), the tail end of the middle connecting rod (14) is hinged with the head end of the rear connecting rod (12) through a rear pin shaft (17), and when the foldable baby stroller is in an unfolded state, the front support shaft (13), the rear pin shaft (17) and the rear support shaft (21) are located on a straight line from the main viewing direction.

7. A folding stroller according to claim 6, wherein: a lower pulling device is arranged at the position of the rear pin shaft (17), and the lower pulling device is a shaft sleeve sleeved outside the rear pin shaft (17).